Grain- winnower



a. B. SALMON.

Grain Winnower.

No. 9,863. Patented July 19,1853.

N. rum 1mm 1 Wm B; C.

UNITED STATES PATENT OFFICE.

GEO. B. SALMON, OF ELMIRA, NEI/V YORK.

GRAIN-WINNOWER.

Specification of Letters Patent No. 9,863, dated July 19, 1858;Antedated July 6, 1853.

To all whom it may concern Be it known that I, GEORGE B. SALMON, ofElmira in the county of Chemung and State of ew York, have inventedcertain new and useful Improvements in Grain- Separators; and I dohereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the anneXed drawings, making a part of this specification,in which- Figure l is a longitudinal vertical section of the machine,the line of section being through the center. section of the blast spouttaken at the line w, 00, Fig. 1. Fig. 3, is a plan or top view of thescreen or sieve.

Similar letters of reference indicate cor responding parts in each ofthe several figures.

The nature of my invention consists in cleaning and separating grain bymeans of a blast spout, screen and troughs, arranged in a manner whichwill be hereafter described, by which the grain is perfectly separatedfrom the improper substances which is usually mixed with it previous tobeing separated, and the grain, as well as the different sorts ofimproper substances conveyed to separate places and kept distinct orseparate from each other.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A, represents the frame of the machine which does not differ materiallyfrom the frames of other machines of the kind in use.

B, is the blast spout connected at its lower end to the fan boX C, whichcontains the fan D. The blast spout B, is curved at its upper end andinclines downward a short distance as seen in Fig. l. The outer side ofthis curved upper part of the spout is formed, for a short distance, ofwire cloth E.

F, is the screen placed on the upper part of the frame A, and directlyover a box G, having an inclined bottom H, the lower end of which restsagainst the inner side of the blast spout B, immediately below anopening I, which leads into the blast spout. The screen is formed of twoparts or rather has two different sized sieves (a) (b). The sieve (a) isfiner than the sieve (12). They are both placed in one frame, the finesieve (a) being at the upper part of the frame,

allows the substances thence upon the floor or into Fig. 2, is ahorizontal" in a receptacle at the back of through the lower or coarsersieve see Fig. 3. Directly under the fine sieve (a) there is an inclinedboard J, see Fig. 1, upon which smaller substances than Wheat or othergrain, but of an equal specific grav- 1ty fall, and is conveyed into ahopper K, having a double inclined bottom L, which above mentioned andwhich passed through the fine sieve (a) to fall into trough or spouts M,M, placed at each side of the blast spout B, and from a properreceptacle, see black dotted arrows in Fig. 1. The substances largerthan the wheat or other grain to be separated pass over both sieves (a)(b) and fall upon the floor or the machine, The wheat passes (b) andfalls upon the inclined bottom H, of the box G, and passes down saidbottom into the blast spout B, through the opening I, and

see red dotted arrows.

1 passes downward in the blast spout and out at the opening N, see solidblack arrows. lVhile passing down the blast spout the grain is subjectedto the blast generated by the fan D, and dust and other foreign mat terof less specific gravity than the grain is forced out at the top of theblast spout, the dust passing through the wire cloth E, see solid redarrows, and chaff, chess, et cetera passing downward from the mouth ofthe blast spout. See black arrow 1.

The screen is somewhat inclined, the inclined board J, underneath thefine sieve (a) resting upon cleats (0) attached to the sides of theframe. The lower end of the screen rests upon a vertical spring 0, thelower end of which is secured in a socket P, by a thumb screw R saidsocket being attached to a cross piece (d) of the frame A. The spring bybeing secured to the frame in this manner may be raised or lowered asdesired and any proper inclination given the screen.

S, is a cam upon the shaft T, of the fly U. This cam as the shaft T,rotates acts upon the spring 0, forcing it outward, the spring returningby its elasticity. Now as the lower end of the screen rests upon the topof the spring 0, the spring fitting in a slot in the frame of thescreen, it will be seen that a reciprocating motion commonly termed theshake motion is given the screen as the cam revolves. The cam S, in thedrawings is represented of square form, but it may be an eccentric ormany other difscreen F, nor the the grain by the fan blast alone as exerience has fully shown. In my machine, t ose substances such as cockleet cetera pass through the fine sieve (a) and fall upon the inclinedboard J, thence into hopper K, and fall through the troughs or spouts M,M, upon the floor or into a proper receptacle as before mentioned. Theydo not come in contact with the fan blast, it is not necessary theyshould-as the blast if sufiiciently strong would throw out the grain aswell as the cockle. 2nd, by employing the adjustable spring 0, thescreen may have any desired elevation given it and thus be adjusted ascircumstances may require.

I do not claim the blast head, or the blast spout B, separately, neitherdo I claim the trough and spouts M, M, separately; but

What I do claim as my invention and desire to secure by Letters Patent,is

1. The expansion of the upper part of the blast spout B, into thecircular irregular enlarged head with an opening or mouth at the lowerextremity, partly covered with the seive E, for the purpose of allowingthe force of the blast to be exhausted, the screenings immediatelyfalling through the opening or mouth of the head, while the blast anddust escape through the screen E, the blast being governed by a slide,substantially as fully set forth and described.

2. I claim the arrangement and construction of the graduated sieve (a,1),) of unequal fineness, the portion a, being protected from the actionof the fan blast so that the small substances such as cockle &c. passingthrough and falling on the bottom board of the sieve a, pass off at thetrough and spouts M, M; and when the grain arrives at the coarser partof the sieve b, it passes through and is acted upon by the fan blast,while larger substances than wheat pass over the end of the sieve b, andfall on the floor, substantially as herein fully set forth.

In testimony whereof I have hereunto signed my name before twosubscribing witnesses.

I e. B. SALMON.

Witnesses ARTH. C. WATKINS, R. WASHN. FENWIG

